Help information is available for both built-ins (those predicates defined in eclipse_language) and library predicates. If a particular predicate is available in more than one library, the user can specify Module:Name/Arity for PredSpec where Module is the name of the library to select a specific predicate description. If a predicate is available both as a built-in and library predicate(s), then the built-in will be printed in full, while short descriptions are given for the library predicates.
In addition, if information on library is available, help lib(LibraryName) can be used to obtain this information.
Success: help(nl/0). % Displays reference page on nl/0 help(write/X). % Displays short description of % write/1 and write/2 help(fd:(::)/2). % Displays the reference page for fd's ::/2. help((=:=)/2). % Displays reference page for the built-in =:=/2, % and short description of the other instances of =:=/2. help(lib(eplex)). % Displays the reference page for the library eplex. help(X). % Displays short description of % all built-ins Fail: help(nobip/1).